DOI Page / Citation link:
https://doi.org/10.11588/diglit.6271#0097
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is concave, and affords a secure passage for the blood-vessels
and nerves.
Bones. The seven bones of the tarsus are disposed into
two rows. In the first row are:—1st, the astragalus, or up-
permost bone. It has a large smooth convex head, flattened
at its sides, and surrounded by a depression or groove, by
which it is articulated to the tibia and fibula: anteriorly it ha*
a surface of articulation with the os navicular?, and inferiorly
are two surfaces of articulation, separated by a depression for
its connexion with the os calcis.
The os calcis, or calcaneum, is the largest bone of the tarsus,
and of a very irregular shape. It is long, and somewhat flat-
tened at its sides, and forms the projection of the heel, called
its tuberosity, into which the tendo Achillis is fixed. On its
upper surface is an irregular prominence, with a narrow groove
for its articulation with the astragalus. Anteriorly it has a
surface of articulation with the os cuhoides. On its under
surface, which is flattened and concave, are two tubercles that
give origin to muscles. There is a groove on its external sur-
face, in which the tendon of the peroneus longus pa?ses.
In the SLCond row are :—1st, the os nuviculare, orscaplwidts,
situated between the astragalus and ossa cunciformia at the in-
side of the foot. Its anterior surface is convex, and has three
articulatory surfaces which answer to the cuneiform bones :
and there is a tuberosity on its inside, into which the tendon
of the tibialis posticus is inserted :—2. The os cuboides, which
is the outermost bone, is of an irregular shape, and has a pro-
tuberance on its under surface, between which and the meta-
tarsal bone, the tendon of the peroneus longus passes :—the
remaining three bones are called cuneiform, and distinguished
into the os cuneiforme externum, medium, and internum.
Eminences. The head of the astragalus, and the tubero-
sity of the heel.
is concave, and affords a secure passage for the blood-vessels
and nerves.
Bones. The seven bones of the tarsus are disposed into
two rows. In the first row are:—1st, the astragalus, or up-
permost bone. It has a large smooth convex head, flattened
at its sides, and surrounded by a depression or groove, by
which it is articulated to the tibia and fibula: anteriorly it ha*
a surface of articulation with the os navicular?, and inferiorly
are two surfaces of articulation, separated by a depression for
its connexion with the os calcis.
The os calcis, or calcaneum, is the largest bone of the tarsus,
and of a very irregular shape. It is long, and somewhat flat-
tened at its sides, and forms the projection of the heel, called
its tuberosity, into which the tendo Achillis is fixed. On its
upper surface is an irregular prominence, with a narrow groove
for its articulation with the astragalus. Anteriorly it has a
surface of articulation with the os cuhoides. On its under
surface, which is flattened and concave, are two tubercles that
give origin to muscles. There is a groove on its external sur-
face, in which the tendon of the peroneus longus pa?ses.
In the SLCond row are :—1st, the os nuviculare, orscaplwidts,
situated between the astragalus and ossa cunciformia at the in-
side of the foot. Its anterior surface is convex, and has three
articulatory surfaces which answer to the cuneiform bones :
and there is a tuberosity on its inside, into which the tendon
of the tibialis posticus is inserted :—2. The os cuboides, which
is the outermost bone, is of an irregular shape, and has a pro-
tuberance on its under surface, between which and the meta-
tarsal bone, the tendon of the peroneus longus passes :—the
remaining three bones are called cuneiform, and distinguished
into the os cuneiforme externum, medium, and internum.
Eminences. The head of the astragalus, and the tubero-
sity of the heel.